From a6618351f0eb2abb73ede97fc844a5522d486e13 Mon Sep 17 00:00:00 2001
From: Henry de Valence <hdevalence@hdevalence.ca>
Date: Tue, 14 Mar 2017 01:53:26 -0700
Subject: [PATCH] Add note about nightly feature

---
 README.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.md b/README.md
index e070e9c..ef10f59 100644
--- a/README.md
+++ b/README.md
@@ -50,6 +50,10 @@ Then, in your library or executable source, add:
 
     extern crate curve25519_dalek
 
+On nightly Rust, using the `nightly` feature enables a radix-51 field
+arithmetic implementation using `u128`s, which is approximately twice as
+fast.
+
 ## TODO
 
 * Implement hashing to a point on the curve (Elligator).